Your tax refund was not sent to TurboTax. TurboTax does not handle your refund at all.
If you used incorrect banking information for the direct deposit, then your refund was sent back to the third party bank. That bank might issue a check to you and mail it to you, or they might send your refund back to the IRS and the IRS has to issue and mail a check. You have to follow up with the third party bank to track it down.
Meanwhile, open all mail even if it looks like junk mail. It could be your refund.
Santa Barbara Tax Products Group, LLC (SBTPG) is the bank that handles the Refund Processing Service when you choose to have your TurboTax fees deducted from your refund. This option also has an additional charge from the bank that processes the transaction.
You can contact them SBTPG, toll-free, at 1-877-908-7228 or go to their secure website www.sbtpg.com
https://ttlc.intuit.com/questions/2580357-who-provides-the-refund-processing-service
https://ttlc.intuit.com/community/refunds/help/who-provides-pay-with-my-refund/00/26410